Cartridge or shell



G. w. sHAuERTE E1- Al.

CARTRIDGE 0R SHELL Filed May 51. 1924 lllll fof D r "v y .Citizens/'of-theUnited'Stat'and residing lat 'f5' AltonandfEast Alton,y Stateof Illinoisgfhave l invented lthe new 4and useful "Improvement i'njGartridges 'or'Shellafoffvvhioh theffollow ing is'afi-speeification' if* 'Y i, ".Th's invention relates to' ammunition; andV n 'linfore'v ,partieularly'to Alc'artridgesfo hel-ls '1 'iised'infshot'gunsan'd'the'like. l

p The" Vordinary "oartridgefifor shell i's prol y vided with'a ,primingdevicewhioh includes f 'aipriming. .eap'usually`fempty,zfexcept lflora small c'harge* ofi'fulminateg fThisf'"cap` is mounted al'sfuit'able primer cavitywlich.

y'is in communic'atio'n'with that partof-1`the interior of the shell which receives 'the pro- ,f *o 'pellin'g'ieharge Vllnthe` ordinary construc- :Y 20'L tion the opening or: ductwhich leads yfrom f thelprimer cavity'to the propelling charge is n sufficiently large y'so 4that the grains' of the fvpropelling charge lmay` sift into the primer a 1 cav-ityfor duct. In ther ordinary'handling 2.25 of fthe shell, a.considerablev quant-ity of powder 'from the propelling charge .may f 'thusfindits yway into the primer cavity and eveninto the primer-cap itself.V v Under such eonditionswhen the fulminate "inz the cap is detonated,V the powderv in the v primer cavity willfbe ignited and vthe suc- .weee-ding explosion: may produce sufficient 'Y pressure in thi'scavity to rupture thel prim- Y kinefca'p and may even",L discharge a flame L,rearwardly 'of 'the shell so as Vto yendangerV the eye of the shooter. f f i L l One of the objects ofthis invention,V therefore,` is to provide'a shellfcon'struction whichv will prevent grains of thepropelling'charge r`'from entering into :the: primer cavity.YY Y Y I Another object is to provide a construction f which 'not only will preventthe propelling f fmcharge from finding its way intothe primer `ca vityvbut which will provide that-[upon c' 7 detonation of the primer the flame produced` 7' thereby will be readily; transmitted toi` the Y propelling charge. Y L Another object offthis'invention is to provide a method ofmaking such a cartridge or shell. f Y' 'Y Furtherobjects will appear from the devoffori-iiiiiarijen .ola'siriana tail ,deseriptioiiI ale1'i inconnectikniY accompanying dra"wingtg,y which:

Figure 1 is a;view-Ainferosse'ction howing a shot gun shell-l embodying? thislinveiition;

Figure' 2 isa partial view`---ofl`-theffsame g Y illustrated in Figure 2:

vcharge to ignitethe same. Y

19724.? "serial: N'vgi?,

showing'fthe base'fwadprevios ftotlie i vforming operation and i'nilarl View Referring? theialefcompanyinig 'Figurel shows"afconipleted shot' VThis comprisesfthe ordinary paper''shell whiehl'hasmounted iin its ibase a basefwad 2 Hash. duct 6 communieatingwith-the primerfl 1 I cavity containing the primer cap?. The flashiduct 6 is surrounded by a wall 8 formed in the Ibase wad' *andv tapered upwardly as With the basepvwad 2 formed l65 :secured and 'reenforeed' by the"metalli'cShelli*im g Thebas'e wadisrst formed tofthe 'shape f'f" n o' *l asillustrated Y in Iigurefthe rupper tip of the wall Sfof'V i the vflash V duet-iis comparativelythinfand,v

therefore,y somewhat weakened. Prior to inserting the propelling. charge7 the base VWad,` is reformed as illustrated in,Figure 3;.fA

suitable punch. or other tool 9 is formed to .Y i'

fit within the cavity l()l in the base'gwad Vsurrounding` the wall 8 Vand. is internally chambered to the formshown in Figure 3. When this tool is brought down 1upon the Wad, ythe tip of the wall 8 is .-compressed, swaging the sides-thereof togetherto form afreduoedtip lul formed bythe collapsed wallandso as tol substantially close the upperjend of the flash Y. s u

duct 6( This tipy being thus compressed or; crimped closes the flash duct 6, but provides; f l a weakened portionwhich will yieldfto the f 95 pressure generated in the` primer cavity by the detonation ofthe primer so rthat'fthis v5 Y `tube will be blown open, thereby permitting o* i the propelling K 1 Y the flash to communicate with There is thus provided a, 551111151@k nd-ef; fective method of overcoming the' difficulties incident to the sifting of powder-grains into j the primer cavity. By forming the base wad to close the primer cavity, the necessity of providing a closed battery cup or other similar device is obviated. This construction is carried out by a very simple operation reforming the tip 11 so as to compress and weaken the same.

ditions and opening the same at the proper time for transmitting the flash to the propelling charge.

It is obvious that various changes may be made in details of construction without departing from the spirit of this invention; it is, therefore, to be understood that this invention-is not to be limited to thel specific details .show-n and described.

Having thus described the invention, what is. rclaimedis: Y

l. In a. cartridge or shell, a base wad having a substantially lclosed flash duct.

2. In ya cartridge -or shell, a base wad having a flash duct whose walls are formed to be blown open. Y

.3'. 111 a cartridge or shell, a base wad having .a flash duct vwhose walls are crimped together. y

4. In a cartridge or shell, a base wad formed A,with a lash duct substantially closed at one end andV having thin walls at its closed end.

5,. VIn a cartridge or shell, a base wad formed with a ilash duct substantially closed at one end and having walls at its .closed yendi `ormedso as to yield to pressure within said duct..

Y This at once provides` for closing -the flash duct under normal con-V 6. A cartridge or shell having a base wad, a primer, and a flash duct passing through said wad and nearly closed at its flash end.

7 A cartridge or shell having a primer and a base wad provided with a flash duct, the base wad being formed to provide a nearly closed but weakened tip for said duct.

8.1A cartridge or shell having a pri-mer and a base wad formed to provide -a` flash duct terminating Vin a converging tiip, said tip being collapsed to close said duct.

9. A'cartridge or shell having a primer,

-a base wad provided with a liash duct leading from said primer, and a compressed tip for said wad Vadapted, to close said duct.

10. The method of making -base wads for cartridges or shells, comprising,y forming the wad with, a flash duct, and substantially closing said duct.

ll. The method of `making base wads for cartridges or shells, comprising, .forming the wad with a flash duct, and swaging the walls of said duct together.

'12. The method of making 'base wads for cartridges or shells,;comprising, forming the wad with a ilash duct, .and .reforming the walls of said duct.

13. The method of making base wads for cartridges .or shells, comprising, ormingthe wad with a flash duct terminating in` a converging tip, and compressing said tip to Close said duct.

In testimony whereof We atlix our signa.- tures this A9th day of April, 1924.

'GEORGE W. SGHAUERTE. ALBERT J. HINDRIGHS. 

